Coolant Loss

[zonie77]

To loosen, yes it might help. I highly recommend the antisieze before you replace the plugs.

[zonie77]

I don't use AOL. Can I get into AIM with a Yahoo instant message ID?

[ShadowLvr400]

nope, but I have Yahoo messenger as well Shadowlvr400 there too. I've now made a room in yahoo, Phils Repairs
And WD 40 rules!!!! Got plug 8 loosened and free!

[ShadowLvr400]

Ok, front set of plugs free, out, and a bit oily...
Now, how am I going to get the rears out? Pull the coil packs and the sway bar?
Oh, can I test the front back, with the back bank still with the plugs in? (The wires have been pulled, so they won't fire)

[zonie77]

You could do 4x4 but it's easier on the starter to pull them all.
Yes, pull the coil pack. It's 3 bolts.

[ShadowLvr400]

Front bank Cylinder 8, 120 psi Cylinder 6 140 psi, Cylinder 4 140 psi, Cylinder 2 75 psi...... Going to work on freeing the back bank shortly. I will retest shortly, after pulling everything else, and making sure I had the final one plugged in properly... But that kind of drop is pretty indicative of a head gasket, isn't it? If so, She'll sit while I save up money, and I'll get those performance heads from XMS. And try to do a changeout myself.

[ShadowLvr400]

Rear bank, 1-130 psi, 3-90 psi, 5-120 psi, 7-130 psi

[DaveSmed]

Oh well. Look at it as an oppurtunity to install the timeserts, install some copper headgaskets, and then crank up the nawws. What do the XMS heads have done to them? Port and polish? Larger valves?

[elwesso]

Yeah, you got 2 cylinders that are really low.... Start saving money!!

[chevyorange]

Thanks for the great thread. I think my 94 STS with *gasp* 91K is having this problem... disappearing coolant with no leak.

BAH!

[PhillyCaddy]

well after reading every post in this thread, I now know what I have to test for, but I think I already know what the answer will be...HEAD GASKETS
I am blowing water out of the coolant tank at high speeds and high revs. also it is overheating.
I will do the compression test now.